Swift never revealed the subject of her breakup song "Dear John," but Mayer says it's about him and that it was a "lousy" thing to do

Receive the latest celebrity updates in your inbox

John Mayer and Taylor Swift perform onstage in 2009. The pair were rumored to be romantically involved at the time.

As John Mayer celebrates a second week atop the Billboard charts with his new album "Born and Raised," the singer reveals he is "really humiliated" by Taylor Swift and her song "Dear John."

Swift has never revealed the target of her scathing breakup number, but according to a new interview with Rolling Stone, the "Your Body is a Wonderland" singer is convinced it's him.

"It made me feel terrible," Mayer, 34, said in the article. "I'm pretty good at taking accountability now, and I never did anything to deserve that. It was a really lousy thing for her to do. I never got an email. I never got a phone call. I was really caught off guard, and it really humiliated me at a time when I'd already been dressed down. I mean, how would you feel if, at the lowest you've ever been, someone kicked you even lower?"

Mayer received heavy public criticism in 2010 after a he spoke explicitly about former girlfriends Jessica Simpson and Jennifer Aniston — even going as far as to peg Simpson as "sexual napalm" — in an interview with Playboy. He apologized at the time, and says in Rolling Stone that the experience prompted him to remove himself from the media spotlight — something he still consciously avoids when able.

Mayer and Swift, 22, were rumored to be dating in late 2009, though neither has publicly confirmed the relationship. "Dear John," from Swift's album "Speak Now," was released soon after Mayer went on his self-imposed publicity hiatus and includes the lyrics, "Don't you think nineteen's too young to be played with?/Your dark twisted games when I loved you so/I should've known."

"I will say as a songwriter that I think it is kind of cheap songwriting," Mayer goes on to say about the song. "I know she's the biggest thing in the world, and I'm not trying to sink anybody's ship, but I think it is abusing your talent to rub your hands together and go, 'Wait till he gets a load of this!"